Brewster Veterinarians

Highly-Skilled, Compassionate Veterinarians

Dr. William Kaser, DVM

Dr. William Kaser began working at Brewster Veterinary Hospital in 2010. He partnered with Veterinary Associates of Cape Cod and purchased the practice in 2015. He currently acts as Brewster Veterinary Hospital’s medical director. A native of Cape Cod, Dr. Kaser began practicing in 1999. Most of his experience is in general practice. He is one of the original founders of the Cape's only emergency and specialty hospital in Dennis, Massachusetts. Dr. Kaser is a member of the American Veterinary Medical Association and the Massachusetts Veterinary Medical Association. He is also federally accredited.

Before veterinary school, Dr. Kaser earned undergraduate degrees from Cape Cod Community College and Murray State. He went on to attend University of Missouri College of Veterinary Medicine where he earned his Doctorate of Veterinary Medicine in 1999. Dr. Kaser’s professional interests include internal medicine, general surgery and dentistry. He especially values the relationships he has established with his patients and clients.

At his home in Brewster, Dr. Kaser lives with his wife Megan, their three children and their many pets that include dogs, cats, sheep, chickens, geese, ducks, a cow and a goat. He enjoys the outdoors and working on his hobby farm.

Dr. Travis Grodkiewicz, DVM

Dr. Travis Grodkiewicz began working at Brewster Veterinary Hospital in 2019. He grew up surrounded by chickens, goats, sheep, cows, pigs, cats, and dogs, as his father is a veterinarian in his home state of New Jersey. Dr. Grodkiewicz earned his bachelor's degree from Tufts University. He took several years between his undergraduate degree and veterinary school in which he completed his veterinary prerequisite courses at the Harvard University Extension School. He then attended the Cummings School of Veterinary Medicine at Tufts University and was awarded his Doctorate of Veterinary Medicine in 2019.

Dr. Grodkiewicz's professional interests include internal medicine, surgery, dentistry, and exotics. He values providing the utmost quality of care to patients and working together with clients to ensure the health of their pets. Dr. Grodkiewicz is a member of both the American Veterinary Medical Association and the Massachusetts Veterinary Medical Association.

At home, Dr. Grodkiewicz spends his time with his dog and two cats. He enjoys the outdoors and loves hiking, camping, swimming, and triathlons.

Dr. Colleen Barrett, VMD

Dr. Colleen Barrett began working at Brewster Veterinary Hospital in 2021. She is a 2018 graduate of the University of Pennsylvania School of Veterinary Medicine. In 2019, she completed an additional year of concentrated, experiential learning as a rotating intern at the University of Illinois College of Veterinary Medicine where she focused on emergency/critical care, internal medicine, and surgery. In 2020, she then completed an avian/exotic animal medicine and surgery specialty internship at Red Bank Veterinary Hospital – Tinton Falls, NJ.

Dr. Barrett takes pride in being a part of your pet’s healthcare team and enjoys making both your and your pet’s lives better. Among many other focusses, Dr. Barrett emphasizes low stress visits, early prevention, personalized medicine, and quality of life/pain management. Dr. Barrett is happy to see all creatures great and small – dogs, cats, small mammals, birds/poultry, reptiles, amphibians, fish, and more!

As a life-long visitor, Dr. Barret now calls Cape Cod home and lives with a tank of tropical fish and her orange tabby cat, Roy. She enjoys (really) long walks, rowing, and SCUBA.

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